A spinal endoscope working cannula

Abstract

A spinal endoscope working sleeve, comprising a movable part, a sleeve body and an operating handle. One end of the movable part is fixedly assembled at the front end of the sleeve body, and the operating handle is fixedly assembled at the rear end of the sleeve body. The movable part includes a plurality of drum-shaped pipe joints, and the two ends of the drum-shaped pipe joints are respectively provided with a chuck end or a clamping groove end. The chuck end is provided with a trumpet-shaped chuck, and the clamping groove end is provided with an annular clamping groove. The chuck and the clamping groove are movably clamped with each other, and the clamping groove end is the end of the movable part. The front movable part of this spinal endoscope working sleeve can reciprocally bend on the same horizontal plane, change the path of the endoscope working channel, obtain more surgical fields of view, and achieve the effect of observing multiple lesions from a single wound. The movable part of this spinal endoscope working sleeve has a tightening function and can form a rigid non-linear endoscope working channel according to the needs of the operator.

Description

Technical Field

[0001] The present invention relates to the technical field of spinal endoscopes, and particularly to a working sleeve for a spinal endoscope. Background Art

[0002] Since minimally invasive spinal surgery involves less traction and dissection of soft tissues, it can reduce postoperative pain and shorten the recovery time. With the development of micro-endoscope technology and the clinical application of special surgical instruments and equipment, surgeons can perform previous surgical operations through one or more small incisions. Similar to open surgery, minimally invasive spinal surgery can also achieve nerve decompression, spinal stability and fusion, and correction of spinal deformities under minimally invasive conditions. Minimally invasive spinal surgery requires the use of rigid endoscopes such as disc endoscopes as the main surgical tools. A rigid endoscope is an endoscope whose part entering the human body cannot bend along the natural body cavity or the created surgical incision or other instrument channels. It mainly enters the human body through an invasive method rather than through the natural body cavity.

[0003] When performing surgery with the current disc endoscope, due to the single surgical incision, the field of view of the endoscope is limited, which brings difficulties to the operation of the operator. At the same time, if a better view of the interior of the human body is required for a more intuitive view, multiple incisions need to be made for observation, which not only increases the trauma to the patient and is not conducive to the patient's postoperative recovery, but also increases the complexity of the surgery and the surgical risk. Therefore, in view of the deficiencies of the prior art, it is very necessary to provide a working sleeve for a spinal endoscope according to the present invention to overcome the deficiencies of the prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide a working sleeve for a spinal endoscope to avoid the deficiencies of the prior art. The front-end movable part of the working sleeve for a spinal endoscope can bend reciprocally in the same horizontal plane, change the path of the endoscope working channel, obtain more surgical fields of view, and achieve the effect of observing multiple lesions from a single incision. The movable part of the working sleeve for a spinal endoscope has a tightening function and can form a rigid non-linear endoscope working channel according to the needs of the operator.

[0005] The above object of the present invention is achieved by the following technical measures.

[0006] The present invention provides a working sleeve for a spinal endoscope, comprising a movable part, a sleeve body, and an operating handle;

[0007] One end of the movable part is fixedly assembled at the front end of the sleeve body, and the operating handle is fixedly assembled at the rear end of the sleeve body;

[0008] The movable part includes a plurality of drum-shaped pipe joints, and a chuck end or a slot end is respectively arranged at both ends of the drum-shaped pipe joint;

[0009] The chuck end is provided with a trumpet-shaped chuck, and the slot end is provided with an annular slot. The chuck and the slot are movably clamped with each other in a matching manner, and the slot end is the end of the movable part.

[0010] Preferably, the drum-shaped pipe joint is provided with one chuck and one slot;

[0011] The chuck of one drum-shaped pipe joint is sequentially and movably clamped with the slot of another drum-shaped pipe joint.

[0012] Another preference is that the drum-shaped pipe joint includes a double-headed pipe joint and a double-slot pipe joint. The double-headed pipe joint is provided with two chucks, and the double-slot pipe joint is provided with two slots;

[0013] The double-headed pipe joint and the double-slot pipe joint are sequentially and movably clamped at intervals.

[0014] Further, the chuck is arranged at the outer edge of the opening of the drum-shaped pipe joint. One end of the chuck integrally connected to the drum-shaped pipe joint is the small-mouth end, and the other end of the chuck is the large-mouth end; a plurality of longitudinal hollow slots are opened at the large-mouth end, and a catch is arranged at the outer wall edge of the large-mouth end;

[0015] The slot is arranged at the inner edge of the opening of the drum-shaped pipe joint;

[0016] The diameter M of the large-mouth end is greater than the diameter D of the opening where the slot is located, and the diameter N of the small-mouth end is less than the diameter D of the opening where the slot is located, M > D > N.

[0017] Further, two pairs of limiting holes distributed relatively at 180° are opened on the drum body of the drum-shaped pipe joint, and the connecting line of each pair of limiting holes is parallel to the pipe axis.

[0018] In one implementation manner of the present invention, the operating handle is further provided with a cable control device, including an adjusting knob, a wire winding shaft, and a traction steel wire;

[0019] One end of the wire winding shaft is movably installed on the operating handle, the other end of the wire winding shaft is fixedly connected to the adjusting knob, and both ends of the traction steel wire are respectively fixedly connected to the wire winding shaft and one side of one of the drum-shaped pipe joints;

[0020] The adjusting knob drives the wire winding shaft to rotate relative to the operating handle.

[0021] Further, four groups of cable control devices are provided; two of the cable control devices are fixedly connected to both sides of the drum-shaped pipe joint at the end of the movable part, and the other two cable control devices are fixedly connected to both sides of the drum-shaped pipe joint at the midpoint of the movable part.

[0022] Further, the traction steel wire sequentially passes through a pair of limiting holes on the same side of the drum-shaped pipe joint.

[0023] Furthermore, both the movable part and the sleeve body are made of stainless steel.

[0024] In another implementation manner of the present invention, the material of the end of the movable part and the drum-shaped pipe sections that equally divide the movable part arbitrarily is magnetic stainless steel, and the material of the other drum-shaped pipe sections of the movable part is non-magnetic stainless steel.

[0025] Advantages of the present invention:

[0026] (1) The front end of the working sleeve of the spinal endoscope is provided with a movable part that can bend reciprocally, changing the path of the endoscope working channel, obtaining more surgical fields of view, and achieving the effect of observing multiple lesions from a single incision. In practical applications, the operator can observe the bilateral conditions of multiple segments of the spine through unilateral puncture. This spinal endoscope working sleeve has only one surgical access, which can reduce the number of incisions of the patient and is beneficial to the postoperative recovery of the patient.

[0027] (2) The movable part at the front end of the working sleeve of the spinal endoscope is provided with a plurality of drum-shaped pipe sections that are movably clamped. The two ends of the drum-shaped pipe section are provided with a chuck or a clamping groove. The chuck is in a trumpet shape, the small end of which is integrally connected to the opening of the pipe section, and the large end thereof has a hollow groove and an outwardly turned hook, dividing the large end into a plurality of claw pieces with a certain resilience. Therefore, when an inward force is applied to the large end of the chuck, it can contract radially inward along the hollow groove; when the large end of the chuck loses the force, it will return to its original state. At the same time, due to the design of the hollow groove, the large end of the chuck can contract locally. When the axes of the two drum-shaped pipe sections are on the same straight line, when the chuck slides to the limit position where the hook is embedded in the clamping groove, the large end of the chuck is radially squeezed and contracted as a whole. When the axes of the two drum-shaped pipe sections are not on the same straight line, that is, the movable part bends, the chuck on the bending direction side remains unchanged, and the distance between the hook on this side and the clamping groove is the farthest, while the chuck on the other side of the bending direction contracts inward, and the chuck slides locally to the limit position where the hook is embedded in the clamping groove. The chuck with a hollow groove can be retracted under force and restored when the force is lost, which can not only ensure that the chuck is firmly clamped and does not loosen after entering the clamping groove, but also ensure that there is a bending space between the drum-shaped pipe sections, realizing the reliable connectivity and bendability of the movable part.

[0028] (3) Since the hollow groove divides the large-mouth end of the chuck into multiple claw pieces with a certain resilience, when an outward force from the inside is applied to the large-mouth end of the chuck, it will expand outward as a whole along the radial direction; when the force on the large-mouth end of the chuck is removed, it will return to its original state. At the same time, due to the design of the hollow groove, the large-mouth end of the chuck can be partially expanded outward. When the movable part is in a bent state, the claw pieces on the bent side are suspended inside the drum-shaped pipe joint. When the endoscope passes through the working pipeline, the endoscope can expand the suspended claw pieces of the large-mouth end of the chuck outward along the radial direction. When the endoscope exits the working channel, the expanded chuck can return to its original state. The chuck with a hollow groove can be expanded outward under force and restored after the force is removed, which can ensure that the inner diameter of the movable part does not become smaller due to bending, and realize the smooth passage of the endoscope.

[0029] (4) The rear end of the working sleeve of the spinal endoscope is provided with an operating handle, and the movable part is controlled by the tension and relaxation of the cable. Specifically, the drum-shaped pipe joint at the end of the movable part and the drum-shaped pipe joints that equally divide the movable part change their directions under the tension of the traction wire. By fixing the traction wire, the position of the movable part can be fixed. Both the movable part and the sleeve body are made of stainless steel, which together form a rigid non-linear working sleeve, providing good support and protection for the endoscope. Another implementation is to set the drum-shaped pipe joint at the end of the movable part and the drum-shaped pipe joints that equally divide the movable part as magnetic stainless steel, and the direction and fixation of the movable part can be controlled by using an external magnetic field navigation.

[0030] In summary, the front-end movable part of the working sleeve of the spinal endoscope of the present invention can reciprocally bend on the same horizontal plane, change the path of the endoscope working channel, obtain more surgical fields of view, and achieve the effect of observing multiple lesions from a single incision. The movable part of the working sleeve of the spinal endoscope has a tension and relaxation function, and can form a rigid non-linear endoscope working channel according to the needs of the operator. The working sleeve of the spinal endoscope can assist the use of a flexible endoscope, overcome the problems of single surgical approach and insufficient field of view in the use of existing rigid endoscopes and working sleeves, and provide new ideas for minimally invasive endoscope technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described with reference to the accompanying drawings, but the content in the drawings does not constitute any limitation to the present invention.

[0032] Figure 1 It is a schematic structural diagram of the working sleeve of the spinal endoscope according to Embodiment 1 of the present invention.

[0033] Figure 2 It is a schematic longitudinal sectional structure diagram of a single drum-shaped pipe joint according to Embodiment 1 of the present invention. Among them, both Fig. (2a) and Fig. (2a) are schematic longitudinal sectional structure diagrams of a single drum-shaped pipe joint.

[0034] Figure 3It is a schematic longitudinal sectional structure diagram of the natural state, limit state, and bending state of the clamping of multiple drum-shaped pipe joints in Embodiment 1 of the present invention. Among them, Figure (3a) is a schematic longitudinal sectional structure diagram of the natural state of the clamping of multiple drum-shaped pipe joints, Figure (3b) is a schematic longitudinal sectional structure diagram of the limit state of the clamping of multiple drum-shaped pipe joints, and Figure (3c) is a schematic longitudinal sectional structure diagram of the bending state of the clamping of multiple drum-shaped pipe joints.

[0035] Figure 4 It is a schematic structure diagram of the cable control device in Embodiment 1 of the present invention.

[0036] Figure 5 It is a schematic longitudinal sectional structure diagram of a single double-headed pipe joint, a single double-grooved pipe joint, and the structure after clamping in Embodiment 2 of the present invention. Among them, Figure (5a) is a schematic longitudinal sectional structure diagram of a single double-headed pipe joint, Figure (5b) is a schematic longitudinal sectional structure diagram of a single double-grooved pipe joint, and Figure (5c) is a schematic longitudinal sectional structure diagram of the structure after clamping of a single double-headed pipe joint and a single double-grooved pipe joint.

[0037] Figure 6 It is a schematic diagram of the application scenario of the spinal endoscope working sleeve in Embodiment 4 of the present invention. Among them, Figure (6a) is a schematic diagram of the position of the spinal nerves at the upper segment of the spinal wound of the spinal endoscope working sleeve, Figure (6b) is a schematic diagram of the position of the spinal nerves at the middle segment of the spinal wound of the spinal endoscope working sleeve, and Figure (6c) is a schematic diagram of the position of the spinal nerves at the lower segment of the spinal wound of the spinal endoscope working sleeve.

[0038] Figures 1 to 6 Among them, it includes:

[0039] The movable part 1, the drum-shaped pipe joint 11, the chuck 111, the slot 112, the hollow slot 1111, the catch 1112, the limit hole 113, the sleeve main body 2, the operation handle 3, the adjustment knob 31, the winding shaft 32, and the traction wire 33. Specific embodiments

[0040] The present invention will be further described in conjunction with the following embodiments.

[0041] Embodiment 1

[0042] A spinal endoscope working sleeve, such as Figure 1As shown in the figure, it includes a movable part 1, a sleeve body 2 and an operating handle 3. One end of the movable part 1 is fixedly assembled at the front end of the sleeve body 2, and the operating handle 3 is fixedly assembled at the rear end of the sleeve body 2. The movable part 1 includes a plurality of drum-shaped pipe joints 11, and the two ends of the drum-shaped pipe joints 11 are respectively provided with a chuck end or a slot end. The chuck end is provided with a trumpet-shaped chuck 111, and the slot end is provided with an annular slot 112. The chuck 111 and the slot 112 are movably clamped with each other, and the slot 112 end is the end of the movable part 1. This spinal endoscope working sleeve is used for minimally invasive spinal endoscopy surgery and can establish a rigid non-linear working channel for the flexible endoscope. The front movable part 1 of this spinal endoscope working sleeve can bend reciprocally, thereby changing the direction of the working channel. In order to increase the rigidity of the present invention and provide good support for the flexible endoscope, both the movable part 1 and the sleeve body 2 are made of stainless steel material.

[0043] As Figure 2 shown in the figure, the drum-shaped pipe joint 11 is provided with a chuck 111 and a slot 112. The chuck 111 is arranged at the outer edge of the opening of the drum-shaped pipe joint. One end of the chuck 111 integrally connected to the drum-shaped pipe joint 11 is the small-mouth end, and the other end of the chuck 111 is the large-mouth end; a plurality of longitudinal hollow slots 1111 are opened at the large-mouth end, and a chuck 1112 is arranged at the outer wall edge of the large-mouth end. The slot 112 is arranged at the inner edge of the opening of the drum-shaped pipe joint 11. The diameter M of the large-mouth end is greater than the diameter D of the opening where the slot 112 is located, the diameter N of the small-mouth end is less than the diameter D of the opening where the slot 112 is located, and M > D > N.

[0044] As Figure 3As shown (partial views of multiple pipe sections), each drum-shaped pipe section 11 has a structure with a chuck 111 and a slot 112. The chuck 111 of one drum-shaped pipe section 11 is sequentially and movably engaged with the slot 112 of another drum-shaped pipe section 11. The connection principle of the present invention is as follows: The chuck 111 is in the shape of a horn. Its small-mouth end is integrally connected to the pipe opening. Its large-mouth end has a hollow slot 1111 and an outward-turned hook 1112, dividing the large-mouth end into multiple claw pieces with a certain resilience. Therefore, when an inward force is applied to the large-mouth end of the chuck 111, it can contract radially inward using the space provided by the hollow slot 1111; when the force on the large-mouth end of the chuck 111 is removed, it will return to its original state. At the same time, due to the design of the hollow slot 1111, the large-mouth end of the chuck 111 can contract locally. When the axes of two drum-shaped pipe sections are on the same straight line, when the chuck 111 slides to the limit position where the hook 1112 is inserted into the slot 112, the large-mouth end of the chuck 111 is radially squeezed and contracted as a whole. When the axes of two drum-shaped pipe sections are not on the same straight line, that is, when the movable part 1 is in a bent state, the chuck 111 on the bent-side remains unchanged, and the hook 1112 on this side is the farthest from the slot 112, while the chuck 111 on the other side of the bending direction contracts inward, and the chuck 111 slides locally to the limit position where the hook 1112 is inserted into the slot 112. The chuck 111 with the hollow slot 1111 can be retracted under force and restored when the force is removed, which can not only ensure that the chuck 111 is firmly engaged and does not become loose after entering the slot 112, but also ensure that there is a bending space between the drum-shaped pipe sections, realizing the reliable connectivity and bendability of the movable part 1. Also, since the body of the drum-shaped pipe section 11 is spherical, the change in the pipe axis direction between two drum-shaped pipe sections 11 is universal, and there are multiple possibilities for controlling the bending direction of the movable part 1. The drum-shaped pipe section 11 of the present invention can be bent in all directions in the above manner. Details are not elaborated here one by one. It should be noted that for the bending angles with different requirements between adjacent two drum-shaped pipe sections 11, those skilled in the art can design the length of the chuck 111, the diameter M of the large-mouth end, the diameter N of the small-mouth end, the diameter D of the opening where the slot 112 is located, the height and width of the body of the drum-shaped pipe section 11 according to the requirements, and no further limitations are made here.

[0045] Since the hollow groove 1111 divides the large-mouth end of the chuck 111 into multiple claw pieces with a certain resilience, when an outward force is applied to the large-mouth end of the chuck 111, it will expand outward as a whole along the radial direction; when the force on the large-mouth end of the chuck 111 is removed, it will return to its original state. At the same time, due to the design of the hollow groove 1111, the large-mouth end of the chuck 111 can be partially expanded outward. When the movable part 1 is in a bent state, the claw pieces on the bent side are suspended inside the drum-shaped pipe joint. When the endoscope passes through the working pipeline, the endoscope can expand the suspended claw pieces at the large-mouth end of the chuck 111 outward along the radial direction. When the endoscope exits the working channel, the expanded chuck 111 can return to its original state. The chuck 111 with the hollow groove 1111 can be expanded outward under force and restored when the force is removed, which can ensure that the inner diameter of the movable part 1 does not become smaller due to bending, and realize the smooth passage of the endoscope.

[0046] As Figure 1 shown, two pairs of limiting holes 113 distributed relatively at 180° are formed in the drum body of the drum-shaped pipe joint 11, and the connection line of each pair of limiting holes 113 is parallel to the pipe axis. The operation handle 3 of this embodiment is also provided with a cable control device, including an adjustment knob 31, a wire winding shaft 32 and a traction wire 33. One end of the wire winding shaft 32 is movably installed on the operation handle 3, the other end of the wire winding shaft 32 is fixedly connected to the adjustment knob 31, and both ends of the traction wire 33 are fixedly connected to the wire winding shaft 32 and one side of one of the drum-shaped pipe joints 11 respectively. The adjustment knob 31 drives the wire winding shaft 32 to rotate relative to the operation handle 3. The traction wire 33 sequentially passes through a pair of limiting holes 113 on the same side of the drum-shaped pipe joint 11.

[0047] As Figure 4As shown in the figure, the cable control device of this embodiment is provided with four groups: E-e, F-f, G-g, and H-h; among them, the two cable control devices of E-e and F-f are fixedly connected to both sides of the drum-shaped pipe joint at the end of the movable part 1, and the other two cable control devices of G-g and H-h are fixedly connected to both sides of the drum-shaped pipe joint at the midpoint of the movable part 1. The cables of the two groups of E-e and F-f do not pass through the drum-shaped pipe joints controlled by the two groups of G-g and H-h. When tightening the traction wire 33 on one side, the connected drum-shaped pipe joint turns towards the stressed side, realizing the bending of the movable part 1 along the preset route. After the movable part 1 bends along the preset route, lock the adjustment knob 31, and the movable part 1 is fixed. At this time, the movable part 1 and the sleeve body 2 together form a rigid non-linear working sleeve, providing good support and protection for the endoscope. At the same time, it is beneficial to the steering operation of the endoscope and helps the endoscope obtain more views. During production, the cable control device and the limit hole 113 can be increased according to actual needs to be controlled, so as to obtain a more dimensional and accurate endoscope route. During use, keep the working sleeve flush with the end of the flexible endoscope, use the light source of the flexible endoscope as the illumination inside the human body, and under visible conditions, use the cable control device to adjust the position and direction of the movable part 1. It avoids the need to use means such as X-ray contrast to know the position of the working sleeve, reducing the radiation hazards to the operator and the patient.

[0048] The front-end movable part 1 of the working sleeve of the spinal endoscope of the present invention can reciprocally bend in the same horizontal plane, change the path of the endoscope working channel, obtain more surgical views, and achieve the effect of observing multiple lesions from a single wound. The movable part 1 of the spinal endoscope working sleeve has a tightening function and can form a rigid non-linear endoscope working channel according to the needs of the operator. The spinal endoscope working sleeve can assist the use of a flexible endoscope, overcome the problems of single surgical approach and insufficient vision in the use of existing rigid endoscopes and working sleeves, and provide new ideas for minimally invasive endoscope technology.

[0049] Embodiment 2

[0050] A spinal endoscope working sleeve, the other structures are the same as those in Embodiment 1, the difference is that, as Figure 5 shown, the drum-shaped pipe joint 11 includes a double-headed pipe joint and a double-grooved pipe joint. The double-headed pipe joint is provided with two clamping heads 111, and the double-grooved pipe joint is provided with two clamping grooves 112. The double-headed pipe joint and the double-grooved pipe joint are sequentially and movably clamped at intervals.

[0051] The front-end movable part 1 of the working sleeve of the spinal endoscope of the present invention can reciprocally bend in the same horizontal plane, change the path of the endoscope working channel, obtain more surgical views, and achieve the effect of observing multiple lesions from a single wound. The movable part 1 of the spinal endoscope working sleeve has a tightening function and can form a rigid non-linear endoscope working channel according to the needs of the operator.

[0052] Example 3

[0053] A working sleeve for a spinal endoscope, with other structures being the same as those in Example 1 or 2. The difference lies in that the materials of the end of the movable part 1 and any drum-shaped pipe section that equally divides the movable part 1 are magnetic stainless steel, and the materials of the other drum-shaped pipe sections 11 of the movable part 1 are non-magnetic stainless steel. During use, keep the working sleeve flush with the end of the flexible endoscope, use the light source of the flexible endoscope as the illumination inside the human body, and under visual conditions, use an external magnetic field to navigate and control the direction and fixation of the movable part 1. This avoids the need to use means such as X-ray contrast to know the position of the working sleeve, and reduces the radiation hazards to the operator and the patient.

[0054] The front-end movable part 1 of the working sleeve for a spinal endoscope of the present invention can reciprocally bend in the same horizontal plane, changing the path of the endoscope working channel, obtaining more surgical fields of view, and achieving the effect of observing multiple lesions from a single incision. This working sleeve for a spinal endoscope can form a rigid non-linear endoscope working channel according to the needs of the operator. This working sleeve for a spinal endoscope can assist the use of a flexible endoscope, overcoming the problems of single surgical approach and insufficient field of view in the use of existing rigid endoscopes and working sleeves, and providing new ideas for minimally invasive endoscope technology.

[0055] Example 4

[0056] A working sleeve for a spinal endoscope having the structure of Example 1 or 2 or 3 is applied to the scenario of spinal minimally invasive surgery as Figure 6 shown. By controlling the reciprocating bending of the movable part 1 within the safe triangle area of the spine, this working sleeve for a spinal endoscope can move to the positions of the bilateral spinal nerves No. ① to ⑥ in the upper, middle, and lower three segments near the spinal incision with only one incision, creating a good supporting environment for the flexible endoscope.

[0057] The front-end movable part 1 of the working sleeve for a spinal endoscope of the present invention can reciprocally bend in the same horizontal plane, changing the path of the endoscope working channel, obtaining more surgical fields of view, and achieving the effect of observing multiple lesions from a single incision. This working sleeve for a spinal endoscope can form a rigid non-linear endoscope working channel according to the needs of the operator. This working sleeve for a spinal endoscope can assist the use of a flexible endoscope, overcoming the problems of single surgical approach and insufficient field of view in the use of existing rigid endoscopes and working sleeves, and providing new ideas for minimally invasive endoscope technology.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A spinal endoscope working cannula, characterized in that, It includes an active part, a sleeve body and an operating handle; One end of the active part is fixedly assembled at the front end of the sleeve body, and the operating handle is fixedly assembled at the rear end of the sleeve body; The active part includes a plurality of drum-shaped pipe joints, and the two ends of the drum-shaped pipe joints are respectively provided with a chuck end or a slot end; The chuck end is provided with a trumpet-shaped chuck, the slot end is provided with an annular slot, the chuck and the slot are matched and movably clamped with each other, and the slot end is the end of the active part; The materials of the end of the active part and any drum-shaped pipe joint that equally divides the active part are magnetic stainless steel, and the materials of the other drum-shaped pipe joints of the active part are non-magnetic stainless steel; The drum-shaped pipe joint is provided with a chuck and a slot, and the chuck of one drum-shaped pipe joint is sequentially and movably clamped with the slot of another drum-shaped pipe joint; or the drum-shaped pipe joint includes a double-headed pipe joint and a double-slot pipe joint, the double-headed pipe joint is provided with two chucks, the double-slot pipe joint is provided with two slots, and the double-headed pipe joint and the double-slot pipe joint are sequentially and alternately movably clamped; The chuck is arranged on the outer edge of the opening of the drum-shaped pipe joint. The end of the chuck integrally connected to the drum-shaped pipe joint is a small-mouth end, and the other end of the chuck is a large-mouth end; a plurality of longitudinal hollow slots are arranged at the large-mouth end, and a catch is arranged on the outer wall edge of the large-mouth end; The slot is arranged on the inner edge of the opening of the drum-shaped pipe joint; The diameter M of the large-mouth end is larger than the diameter D of the opening where the slot is located, the diameter N of the small-mouth end is smaller than the diameter D of the opening where the slot is located, and M > D > N; Two pairs of limiting holes distributed relatively at 180° are arranged on the drum body of the drum-shaped pipe joint, and the connecting line of each pair of limiting holes is parallel to the pipe axis; The operating handle is further provided with a cable control device, including an adjusting knob, a winding shaft and a traction wire; One end of the winding shaft is movably installed on the operating handle, the other end of the winding shaft is fixedly connected to the adjusting knob, and the two ends of the traction wire are respectively fixedly connected to the winding shaft and one side of one of the drum-shaped pipe joints; The adjusting knob drives the winding shaft to rotate relative to the operating handle.

2. The spinal endoscope working sleeve according to claim 1, wherein Four groups of the cable control devices are provided; two groups of the cable control devices are fixedly connected to both sides of the drum-shaped pipe joint at the end of the active part, and the other two groups of the cable control devices are fixedly connected to both sides of the drum-shaped pipe joint at the midpoint of the active part.

3. The spinal endoscope working sleeve according to claim 2, wherein, The traction wire sequentially passes through a pair of limiting holes on the same side of the drum-shaped pipe joint.

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